Chemistry, 24.06.2019 21:30 Hrjohnson2004

1. an isotope is an atom of an element that differs in its number of a. protons b. neutrons c. eletrons 2. what determines what element an atom is? a. the number of protons and neutron in an atom b. the number of electrons in the atom c. the number of neutrons in the atom d. the number of protons in the atom 3. which of the following contributes to the mass number? a. number of protons and neutrons b. number of protons only c. number of neutrons and electrons d. number of protons and electrons

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1. an isotope is an atom of an element that differs in its number of a. protons b. neutrons c. elet...